【作者】 王立武；

【导师】 耿安松；

【作者基本信息】 中国科学院研究生院（广州地球化学研究所） ， 地球化学， 2004， 博士

【摘要】 20世纪90年代以来，吉林油田和全国许多油田一样，简单构造油藏和孔渗条件较好的储层所占比例越来越小，勘探工作主要以“三低”储层为主的隐蔽、复杂的油藏为目标。为了扩大勘探领域，该课题以松辽盆地南部中央坳陷区保乾地区白垩系为研究对象，在大型湖盆向斜中寻找岩性油气藏。 本课题首次将地质学的两大前沿学科层序地层学与含油气系统理论结合在一起，并运用到实际生产性研究中去，使理论与具体实践达到高度统一，并能促使科学技术及时转化为生产力。 通过对松辽盆地的保乾砂体各套沉积层系开展地层层序和沉积体系研究，建立盆地地层时空格架，分析沉积于不同背景下的沉积特征，砂体三维几何描述，恢复古地理格局，确定生储盖组合特征，指出各种类型油气藏的有利区带。 进行含油气系统研究，描述系统的静态特征，分析系统的动态特征，研究生烃潜力和油气的运聚过程，分析生储盖匹配关系及油气的充注期次及过程，预测有利勘探区带，对资源潜力及勘探前景作出科学评价。 通过对富生烃凹陷排烃机理、油气运聚期次、负向构造油气成藏地质模型建立、三角洲前缘岩相时空演化规律等成藏条件研究为前提，创立了适合大型湖盆向斜区油气勘探地质理论-负向构造岩性油藏成藏理论。更多还原

【Abstract】 he explorable simple structural oil pools and the high porosity and permeability reservoirs, like many other oilfields in China, have gradually reduced in Jilin oilfield since 1990s, so the main exploration targets have been changed to subtle and complex reservoirs. For extending the exploration areas, the Cretaceous in Baoqian area in central depression of south Songliao basin is studied in this project, with the purpose of looking for the lithologic reservoirs.The sequence stratigraphy and the hydrocarbon-bearing system theory, which are two advanced subjects in geology, are combined for the first time in this project. The results of this research can be applied to practical productive studies, which can integrate theory with practice and transform the scientific technology into productivity. The prospects of various reservoirs are determined by studing the stratigraphic sequences and depositional systems, establishing the stratigraphic time-space frameworks of the basin, analyzing the depositional features of different depositional backgrounds, describing the 3D geometries of the sand bodies, reconstructing the palaeogeographic framework and determining the characteristics of the source-reservoir-seal assemblage for each set of sedimentary series in Baoqian sand bodies in south Songliao basin.The hydrocarbon-bearing system is studied and the assessment of the resource and exploration potentials are made by describing the static characteristic of the system, analyzing the dynamic characteristic of the system, studing the hydrocarbon generation potential and the course of hydrocarbon migration and accumulation, analyzing the source-reservoir-seal match and packing times and courses as well as predicting the potential exploration areas.Based on the study of the reservoir-forming conditions such as the mechanism of the hydrocarbon generation, the times of the hydrocarbon migration and accumulation, the negative structural reservoir model and the time-space evolution of the delta front facies, a geologic model suitable for oil and gas exploration in synclinal area of large lake basin is suggested, that is, there is exploration potention in the negative structural lithologic reservoirs.更多还原